Plow



2. Sheets-Sheet l A. P. LOFSTRAND PLOW Filed Feb. 9, 1932 Oct. .25, 1932.

Oct. 25, 1932. A. P. LOFSTRAND PLOW Filed Feb. 9. 1932 2 Sheets-Sheet 2 Patented Oct. 25, 1932 f UNITED STATES `e.aTrfzrrr orifice ALBIVN PAULUS LOFSTRAND, OF CHICAGO, ILLINQIS Y PLOW Applicat-ionvled February 9, 1932. Serial No. 591,898.

This invention relates to a plow and has for Figure t is a.' section on line 4 4 Figure 3. its object to provide, in a manner as herein- The plow includes a body part generally after set fortl1,a groundworling device of the indicated at l and which consists of a side bar class referred rto includinga mold board of the 2, a rear bar 3 and a side bar l. rlhe body 5 soil rollaway type formed from a series of conpart 1A is an integral structure. The side bar nected together, spaced, tapered, simultane- 2 is of materially greaterl length than the side ously rotatable,gear driven, soil abutting elebar l. The bars 2 and l are arranged in ments angularly disposed with respect to each parallelism and project vforwardly [from lthe other,each being carried by a combined bearends of the rear bar 3. Secured to the Vinner -e ing and suspension device therefor, and with face of the side bar 2 at the forward portion 55 such elements acting during the plowing to thereof and extending forwardly from such lift and pull under the furrow to create trac bar is a beam 5 having its forward end protion instead of resistance Athereby preventing vided with a hitching means 6 for connecting retardation of the. forward movement of the the plow to a traction element. Secured to low. Y the inner side of the beam 5 and depending 60 A further object of the invention is to protherefrom is a standard 7 which terminates vide, in a manner as hereinafter set forth, a in the plow share 8. Secured upon the upper plow having a mold board including a series face of the bars 2, fl, arranged in parallelism of spaced, tapered, simultaneously rotatable and positioned in proximity to the bar 3 are o soil abutting members angularly disposed bearings 9,10. Secured to the bar k2 are spaced c5 with respect to each otherand so constructed inwardly eXtending arms 11 whiCll ,SHppOrt and arranged to keep clean of gummy soil a vertically dispOsed segmental rack 12. The during the rollaway of the latter when plowpurpose of, the rack 12 will be presently re* ing, ferred to.

25 Further objects of the invention are to pro- The mold board includes a torsionally 70 vide, in a manner as hereinafter set forth, a twisted, upstanding, curved supporting memground working device of the class referred ber 13 having the upper and lower ends Vtluereto which is comparatively simple in its conof of rectangular contour, but disposed at struction and arrangement, strong, durable, right angles to each other. The upper end 3o compact, thoroughly efficient in its use, readof the member 13 is indicated at V14 and its 75 ily assembled and comparatively inexpensive lower end at 15. The end 14 is positioned t0 Sei; up, upon its lower face and the end 15 upon its To the above ends essentially and others lower lengthwise edges. The end 14 is arwhich may hereinafter appear, the invention ranged in proximity to bar 1, kbut below the 35 consists of such parts, and such combination lat-ter. The end 14 is secured tothe bar 2 by S0 of parts which fall within the scope of the a suspension member 16. The end 15 is seinvention as claimed. cured to the standard The supporting In the drawings: member 13 inclines downwardly in ,a direc- Figure 1 is a side elevation of a plow in action towards the standard 7. The member 16 o cordance with this invention. f is iixedly secured, as at 17 to :the bar 2 land .as

Figure 2 is a top plan view thereof. at 18 to the upper portion 14 of the support- Figure 3 is a horizontal sectional view illusing member 13. trating the arrangement of la soil abutting The mold board is illustrated by wayof element relative to a combined bearingV and example as being yprovided with four close- 45 suspension device therefor. ly arranged, tapered, conoidal shaped, rotat- 90 nfl able soil abutting members 19 providing a Y' rollaway for the soil, but this number may be increased or diminished. The supporting member 13 is provided with spaced openings 20 corresponding in number to the number of members 19. Each opening 2O has a. beveled wall 21. The openings are equally spaced and angularly disposed with respect to each other.

Each soil abutting member includes a substantially solid pointed end portion 22 formed with an axial socket 23 having a threaded wall and opening at the rear of such portion. Extending rearwardly from the portion 22 is a hollow portion 24 provided intermediate its ends with an inwardly extending annular flange 25 and its rear end with an inwardly extending annular flange 26. The flange 25 in connection with the rear end of the pointedy portion 22 provides a. chamber 27in which is arranged a packing 28. The flange 25 provides a dirt arrester for the chamber` 28. The rear of the pointed portion 22 has a central boss 29. Fixedly secured and arranged axially of the member 19 is a rotating shaft 30 therefor'. The forward end of shaft 30 hasa reduced threaded extension 31 which engages with the threads of the socket 23 for anchoring shaft to member 19. The shaft 30 is of a length to extend rearwardly from member 19 and has its rear end provided with a. beveled gear 33, the latter being fixed to shaft 30 and isv formed with a forwardly directed hub 32.

A combined bearing and suspension device is associated with each member 19 and such device includes a sleeve 34 formed in its forward end with an inwardly extending annular flange 35 supporting theshaft 30. The rear end of sleeve 34 has an outwardly directed annular flange 36 formed with a beveled face 37. The sleeve 34 extends through an opening :20 and its beveled face bears against the beveled wall 21 of the opening. Arranged within the sleeve 34 and surrounding the shaft 30 is a series of roller bearings 38 mounted at their forward ends in a ring 39 and at their rear ends in a ring 40. The hub 32 arrests the shifting of ring 40 in one direction.

The shaft 30 extends through the rings 39 and 40. The sleeve 34 is coupled with the supporting member 13 to prevent the lengthwise shifting of suoli sleeve relative to member 13,

f by a cap member 41 having inwardly and outwardly extending flanges 42, 43 respectively. The flange 42 overlaps the rear end of sleeve 34 and retains the latter' in member 13. The

flange'43 is secured by holdfast devices 44 to the member 13. f The flange 35 is spaced from the pointed portion 22 Vand a packing 28 is interposed between said flange 35 and portion 22.

The angular disposition of the openings 2O provide for the sleeves 34 to be disposed at an angle with respect to each other. Each member 19 extends in the same direction as that sleeve 34 with whiohit is associated. Each sleeve 34 extends through the flanges 25 and 26 of that member 19 with which it is associated to a point in close proximity to portion 22 of member 19. Each sleeve is stationary.

The members 19 revolve around the sleeves.V

Vupper shaft of the set indicated at 46, the

intermediate shafts of the set at 46 and the lower shaft of the set at 46". The shafts 46 and 46 extend through and are journaled in the cap members 41, other than the lower cap member. ,The shaft 46 extends partly through and is journaled in the other cap member 41. The shafts 46, 46 and 46" carry bevel gears 47 meshing with the bevel gear 33 for driving shafts 30 to provide for the operating of members 19. One end of shaft 46 is universally joined at one end' to the upper one of a set of transmission shafts 48 which are universally joined to shafts 46 and '46. The other end of shaft 46 has fixed thereto a bevel gear 51 of greater diameter than the gear 47. Meshing with, of greater diameter than and driving gear 51 is a bevel gear 52.

Arranged at the rear of the plow is a pair of furrow wheels 53 fixed to an axle 54 Vprovided with a pair of cranks 55. The axle 54 is j ournaled in the sides of an upstanding forwardly inclined adjustable frame 56 having its upward portion provided with a handle member 57. Journaled in the bearings 9, 10V

58 is operated from axle 54 and for such purpose the shaft has a pair of cranks 59 which are coupled with the cranks by connecting rods 60. The shaft 58 extends through the sides of frame 56. As the plow travels the rotation of the furrow wheels 53 will provide through the shaft 58 for the simultaneous operation of members 19. Y

The frame 56 can be adjusted and held in its adjusted position and for such purpose a spring controlled dog and lever mechanism 61 is carried by the handle member 57 and which coacts with the rack 12. The frame 56 extends rearwardly from the bar 3. The wheels 53 act as a support for the rear end of the plow. The rear end of body part 1 has a hitch 62.

What I claim is 1. In a plow, a rollaway mold board including a set of rotatable, conoidal shaped Vsoil abutting elements, arranged one above extending rearwardly therefrom, means forV simultaneously driving said shafts, and a combined suspension and bearing device forv and carrying each element. f

2. In a plow, a rollaway mold board including a set of rotatable, conoidal shaped soil abutting elements, arranged one above the other,'angularly disposed with respect to each other and each including a rotating shaft therefor arranged axially thereof and extending rearwardlytherefrom, means for` simultaneously driving said shafts, a combined suspension and bearing device for and carrying each element, a supporting member for said devices, and cap members secured to the supporting member for securing said devices to the latter and for enclosing one end of said shafts.

3. In a plow, a rollaway mold board including a set of simultaneously rotatable, conoidal shaped soil abutting elements, arranged one above the other and angularly disposed with respect to each other, and a combined suspension and bearing device for each of said elements, each cf said elements having a part positioned axially of said device and a part encompassing said device.

4f. In a plow, a rollaway mold board inciuding a set of simultaneously rotatable, conoidal shaped soil abutting elements, arranged one above the other and angularly disposed with respect to each other, a combined suspension and bearing device for each of said elements, each of said elements having a part positioned axially of said device and a part encompassing said device, supporting means for said devices, and retaining means for said devices secured to said supporting means. Y

5. In a plow, a rollaway mold board including a set of simultaneously rotatable, conoidal shaped soil abutting elements, arranged one above the other and angularly disposed with respect to each other, a combined suspension and bearing device for each of said elements, each of said elements having a part positioned axially of said device and a part encompassing said device, supporting means for said devices, retainingV means for said devices, an operative drive connection for and between said elements for simultaneously operating the latter, said drive connection being supported by said retaining means, a supporting structure for the rear of the mold board assembly, a pair of wheels below said structure, and a driving means for said drive connection operated from said wheels on the travel of the plow.

6. In a plow, a rollaway mold board including a set of simultaneously rotatable, conoidal shaped soil abutting elements, arranged one above the other and angularly disposed with respect to each other, a combined suspension and bearing device for each of said elements, each of said elements having a part positioned axially of one of said devices and a part encompassing the latter, supporting means for said devices, retaining means for said devices secured to said supporting means, and an operative drive connection for and between said elements for simultaneously operating the latter, said drive connection being supported by said retaining means.

In testimony whereof, I aihx my signature hereto.

ALBIN PAULUS LOFSTRAND. 

